CH66902A -
Device for totalizing in calculating machines with a counter which can be switched from addition to subtraction by means of a switching lever
- Google Patents
Device for totalizing in calculating machines with a counter which can be switched from addition to subtraction by means of a switching lever
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Publication number
CH66902A
CH66902ACH66902ACH66902DACH66902ACH 66902 ACH66902 ACH 66902ACH 66902 ACH66902 ACH 66902ACH 66902D ACH66902D ACH 66902DACH 66902 ACH66902 ACH 66902A
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Publication date
Application filed by Wanderer Werke Vormals WinklhofiledCriticalWanderer Werke Vormals Winklho
Publication of CH66902ApublicationCriticalpatent/CH66902A/en
CH66902A1914-01-031914-01-03
Device for totalizing in calculating machines with a counter which can be switched from addition to subtraction by means of a switching lever
CH66902A
(en)